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Finding the Fourth Proportional to 16.64, 22.96 and 10.88

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Solution

The fourth proportional to 16.64, 22.96 and 10.88 is: 15.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.64 : 22.96 = 10.88 : x
  2. Step 2: Convert to fraction form
    16.64/22.96 = 10.88/x
  3. Step 3: Cross multiply
    16.64x = 22.96 × 10.88
  4. Step 4: Simplify right side
    16.64x = 249.80
  5. Step 5: Solve for x
    x = 249.80/16.64
  6. Step 6: Final answer
    x = 15.01

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.